Weapons Pledge

April 26, 1985

NEW DELHI, INDIA — ''Pakistan has no plan to make an atomic bomb.'' M. Humayun Khan, Pakistan's ambassador to India, gave that pledge Thursday and revealed that scientists in his country have succeeded in enriching uranium, part of the process of producing nuclear weapons. The level: 5 percent. Uranium has a natural level of less than 1 percent of U-235, a fissionable isotope. Scientists say it must be enriched to about 90 percent U-235 to produce a nuclear bomb. According to the London-based International Institute of Strategic Studies and Western intelligence reports, Pakistan is trying to produce weapons-grade uranium in a program headed by Dr. Abdul Qadar Khan. The official version is that enriched uranium is to be used in nuclear power plants.